Improvement in automatic boiler-feeders



UNITED STATES PATENT OFFICE.

JOSEPH N. B. BOND, OF NEW YORK, N. Y.

IMPROVEMENT IN AUTOMATIC BOILER-FEEDERS.

Speciiication forming part of Letters Patent N0. 47,791, dated May 23, 1865.

To a/ZZ whom it may concern.-

Be it known that I, JOSEPH N. B. BOND, of the city, county, and State of New York, have invented a new and Improved Automatic Boiler-Feed; and I do hereby declare that the following is a full, clear, and exact description thereof, which will. enable those skilled in the art to make and use the same, :reference being had to the accompanying diawing, forming part of'this specification, in which- `The drawing represents a sectional front elevation of this invention.

This invention consists in the employment or use of a pipe made of brass or some other material which expands much by the inilua ence of heat, said pipe being secured in suitable rigid bearings at a level' with the mean water-line of a steam-boiler, and made to communicate with the water and steam-space ofthe same, in combination with a tank situ; ated above the boiler and supplied with water from a suitablereservoir, and also made to communicate with the steam and with the water space of said boiler in such. a manner that when the water in the boiler sinks below the mean water-line the expansible pipe is exposed to the direct action of the steam, and thereby caused to buckle up, and by this aotion a cock is opened and steam admitted to the upper part ot' the tank, causing the water contained therein to sink down into the boiler, and when the water rises above the mean water-line, the expansible pipe cools oft' and recedes to its original position, andthe further supply of water to the boiler is stopped.

A represents a steameboiler of any desired construction and provided with try-cocks, c b c, the middle one of which corresponds to the mean waterline of the boiler. In line with this middle cock, and secured between rigid bearings, d, is the pipe B, made of brass or other material which undergoes considerable expansion by the influence of heat. This pipe communicates by a tube, c, with the water-space, and by a tube, f, with the steamspace ofthe boiler, and if the water is above the second cock said pipe is filled with water; but if the water sinks below the secf ond cock steam passes into the pipe B and heats the same, so that it buckles up, and by this motion the supply of water to the boiler is regulated.

Asleeve, g, secured to the middle of the pipe B, connects by arod, h, with the short arm of an elbow-lever O, the long arm ot' which connects by a rod, t', with another elbow--A lever, D, and through it and arod, 7, with the stop-cock lc, which opens or closes the communication between the upper part of the tank E and the steam-space of the boiler. Said tank is made of boiler-iron or other suitable material strong enough to resist the samepressure as the steam-boiler,and from its upper-part extends a pipe, Z, to the steam-space, and from its lower part a pipe, m, to the water-space of the boiler. The pipe lis provided with a. stop- Vcock k, as above stated, and the pi'pe m is provided with a check-valve, a, which prevents the water passing from the boiler back to the tank. Said tank is supplied with water from a suit-able receiver by a pipe, o, which is furnished with a check-valve, p, to prevent the steam from the tank rushing out when the cock 7c is open.

The operation is as follows: When the water in the boiler sinks below the mean water l explosion from want of water in the boiler is` avoided.

It must be remarked that the pipe B may be so applied that by its linear expansion the stop-cock k is opened.

I claim as new and desire to secure by Let ters Patent- The expausible pipe B, arranged in combinationwith the tank E and boiler A, substantially in the manner and for the purpose set forth.

Vitnesses: -JOSEPH N. B. BOND.

M. M. LIVINGSTON, C. L. ToPLIFE. 

